The Portland area is going to be in the 80s and 90s this weekend — and it's just mid-May! The week got off to a cool start, with highs that were in the low to mid 60s on Monday and Tuesday. The warmup began Wednesday, with PDX reaching 78 degrees. High temperatures are expected to climb to at least 90 degrees on Saturday and Sunday, which would mark Portland's hottest day of the year so far. Chief meteorologist Matt Zaffino explains what's going on to cause this hot weather. Read more: https://www.kgw.com/article/weather/portland-forecast-record-high-temperatures/283-e11bfd81-290d-4091-a877-af438e5e1bfc Watch more The Story videos: http://bit.ly/watchTheStory Follow The Story on Twitter: https://twitter.com/TheStoryKGW Follow The Story on Instagram: https://instagram.com/thestorykgw